Nicole Kidman is scared of butterflies.
65
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10